nand: Embed mtd_info in struct nand_chip

nand_info[] is now an array of pointers, with the actual mtd_info
instance embedded in struct nand_chip.

This is in preparation for syncing the NAND code with Linux 4.6,
which makes the same change to struct nand_chip.  It's in a separate
commit due to the large amount of changes required to accommodate the
change to nand_info[].

Signed-off-by: Scott Wood <oss@buserror.net>
diff --git a/cmd/jffs2.c b/cmd/jffs2.c
index e4eaa48..f00d53a 100644
--- a/cmd/jffs2.c
+++ b/cmd/jffs2.c
@@ -167,7 +167,7 @@
 	} else if (type == MTD_DEV_TYPE_NAND) {
 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 		if (num < CONFIG_SYS_MAX_NAND_DEVICE) {
-			*size = nand_info[num].size;
+			*size = nand_info[num]->size;
 			return 0;
 		}
 
@@ -244,7 +244,7 @@
 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 	struct mtd_info *mtd;
 
-	mtd = &nand_info[id->num];
+	mtd = nand_info[id->num];
 
 	return mtd->erasesize;
 #else